Below is a list of the most useful codes for accessing hidden menus and diagnostic tools: Description / Purpose Displays your (International Mobile Equipment Identity) number. Factory Test (Engineering Mode) for hardware checks. *#*#4636#*#* Accesses the Testing menu , including battery info and Wi-Fi stats. Maximum SAR Level (radiation safety information). Provides a General Information overview of the device. *#*#225#*#* Calendar information and Version Test data. *#*#426#*#* FCM Diagnostics for Google Play Services connection events. *#*#0000#*#* Displays the About Phone section (Model, Build, and Hardware version). Quick view of the current Firmware version Hardware Revision and PCB serial number. Important Instructions Engineering Mode (
This is the famous "Testing" menu from pure Android. On the VIVO X200 Pro, it works perfectly for: How to Use Secret Codes on VIVO X200 Pro
*#*#7777#*#* A shortcut to the developer settings interface, though you may first need to manually enable Developer Mode by tapping "Build Number" 7 times in Settings > About Phone . Troubleshooting & "Secret" Tips Below is a list of the most useful
The process is straightforward: